Advertising device.



J SIMPSON.

ADVERTISING DEVICE.

APPLICATION FILED DEC. 10, 1913.

1,091,399 Patented Mar. 24, 191i 2 SHEETS-$111331 1.

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J. SIMPSON.

ADVERTISING DEVICE.

APPLICATION FILED DEO.10, 1913,

1,091,399. Patented M11224, 1914.

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COLUMBIA PLANOGRAPH C0,, WASHINGTON. n. c.

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JOHN SIMPSON, OF VANCOUVER, BRITISH C CAR INDICATOR COMPANY, LIMITED,

CANADA.

OLUMBIA, CANADA, ASSIGNOR TO STREET OF VANCOUVER, BRITISH COLUMBIA,

ADVERTISING DEVICE.

Specification of Letters Patent.

Application filed December 10, 1913.

Patented Mar. 24, 1914. Serial No. 805,826.

To all whom it may concern:

Be it known that I, JOHN SIMPSON, of the city of Vancouver, in the Province of iritish Columbia, Dominion of Canada, have invented certain new and useful Im: provements in Advertising Devlces of which the following is a specification.

This invention relates to advertislng devices especially adapted to be set up at street corners or in other public places and combined with a clock for showing the time, and my object is to devise simple mechanism for shifting the advertisements at set periods of time.

I attain my object by the construction hereinafter described and illustrated in the accompanying drawings in which- Figure 1 is a plan view of my improved apparatus partly broken away to expose the interior construction; Fig. 2 is a front elevation of the same partly in section; Flg, 3 is a front elevation partly broken away; Fig. 4 is a detail in front elevation showing the clutch between the driving gearing and the shifting mechanism; Fig. 5 is a side elevation of the same partly in section; ig. 6 is a plan view of one of the card shlftmg dogs; Fig. 7 is a front elevation of the same; Fig. 8 is a plan view of the traveling device for pressing back a bunch of cards in front of which another card is to be shifted; and Fig. 9 is a detail of the connection between the chains and the mechanism for reciprocating the same.

In the drawings like numerals of refer" ence indicate corresponding parts in the different figures.

1 is a motor preferably electrlc, connected with the spindle 2 journaled with suitable bearings on the frame of the apparatus. This spindle has secured thereto a worm 3 meshing with the worm wheel 4, journaled in a horizontal position on the frame of the apparatus. This worm wheel et through the medium of the bevel gearing 5 drives the horizontal shaft 6. This shaft carries a spur pinion 7 meshing with the spur gear wheel 3 loose on the shaft 9 preferably parallel with the shaft 6. On this shaft 9 is loosely supported a sleeve 10 driven by bevel gearing 11 from the gear wheel 8. Th1s sleeve 10 carries a bevel pinion 12 meshing with the bevel gear wheel 13 preferably journaled concentric with the worm wheel 4.

By the arrangement of gearingdescribed a continuous rotary movement is imparted to the gear wheel 13, while the shaft 9 is normally stationary. This shaft 9 I utilize to actuate the shifting mechanism of the apparatus, and the gear wheel 13 I utilize to periodically throw in gear a clutch between the gear wheel 8 and the shaft 9, so that the latter may be periodically rotated.

Before describing the drive, it will be necessary to set out the general arrangement of the apparatus. At the corners of the apparatus, which is preferably square, are arranged vertical spindles 1 1, each carrying guide wheels 15. The spindles are so placed and the guide wheels arranged that two pairs of chains or bands 16 may be carried at the top and bottom of the four compartments 17 holding the advertisino cards 18. These are arranged in two sets 111 each compartment, and the whole purpose of the mechanism is at set intervals, to draw a card from the front of one set to the front of the other set, and simultaneously to draw a card from behind the second set to a position behind the cards of the first mentioned set. It will be noticed particularly on ref erence to Figs. 1 and 3 that the cards have square holes 19 formed therein near the lower edge, one near each end. These holes are engaged by the shifting dogs 20 carried by the lower chains. Each dog has a spring actuated pawl 21 pivoted thereon. A projection 22 is formed just each pawl, the end dropping in too far.

23 is a coil spring engaging part of the shifting dog and the tail of the pawl 21. tending to press the pawl out. Its move ment upward is limited by means of the stop 24, engaging a shoulder on the pawl. In front of the pawl is journaled a roller 25, which extends somewhat beyond the point of the projection 22. The function of this roller is to press back the front card of the set of cards in front of which a new card is to be drawn. The chains at the upper sides of the cards carry only the rollers 25 in a frame 26, which rollers act to press back the upper part of the front card hereinbefore referred to. The chains in front and behind the cards are caused to move in opposite directions by means of the gearing 27 carried by an adjacent pair of the spindles 14. Thus, as a card is being moved from the front of one set to the front of the adjapreventing the pawl back of the end of cent set a card is being simultaneously moved from the rear of the second set to the rear of the first mentioned set.

As soon as a card has been shifted to its new position, it is prevented from being dragged back as the shifting mechanism moves back by the dogs 28, one of which is provided for each set of cards. The dogs are preferably spring dogs, and engage the shoulders 29 formed at the upper edges of the cards.

The chains are actuated from the shaft 9 by the following mechanism: A crank 30 is secured to the end of the shaft 9. A connecting rod 81 is pivotally connected with this crank arm, and with a yoke 32, (see Fig. 9) which yoke is connected with the inner chains 16. It is evident that by the rotation of the shaft the inner chains will be given a reciprocating motion.

The shaft 9 is periodically put in clutch with the gear wheel 8 by the following mechanism: A rocking semi-cylindrical pin 83 is carried in a cylindrical hole formed partly in the shaft and partly in the hub of the bevel gear connected with the wheel 8, (see Fig. 5.) By rocking the pin it may be received either wholly within the shaft as indicated in Fig. a, or may be turned to partly lie within the hub of the gear wheel and partly within the shaft, when a driving connection is formed between the two. The outer end of the pin has a projection 34 formed thereon, which is engaged by the coil spring 35, engaging the projection at one end and a stop 36 secured to the shaft. This spring tends to rock the rock pin to put the two parts in clutch, but the pin is normally held out of the in-clutch position by means of the trip 87, which is pivoted at 38 on part of the frame of the machine, and is normally pressed to the position shown in Figs. 1- and 5 by means of the coil spring 4:1 engaging a stationary part and the lower end of the trip. By rocking this trip toward the gear wheel 8, the projection 34 may be released and a spring allowed to rotate the rocking dog to its in-clutch position. This trip is rocked by means of the cam projections 39 secured to the rim of the gear wheel 13. As many of these may be provided as may be necessary according to the interval at which changes are to be made. Each time one of these cam projections strikes the trip 37, it pushes it out of the path of the projection. Immediately the shaft 9 and gear wheel 8 are put in clutch and the shlfting mechanism is operated. After one revolution the projection 34: again engages the trip 37 which has by that time returned to its normal position, and the shaft and the gear wheel are again thrown out of clutch.

In Fig. 8 is shown a pin 40 secured to one of the frames 26. A similar pin would be formed on the corresponding clutch member on the lower chain adjacent the yoke 32, and to these pins 40 the yoke 32 is connected.

From the above description it will be seen that I have devised a construction which will satisfactorily attain the object of this invention as set forth in the preamble to this specification.

IVhat I claim as my invention is 1. In card shifting mechanism the combination of a plurality of compartments arranged in the form of a closed straight sided geometrical figure; two sets of cards arranged on edge in each of said compartments, the two sets lying end to end; endless chains suitably guided and supported one at the inner side and the other at the outer side of the sets of cards of all the compartments; means for reciprocating said chains simultaneously in opposite directions; and card shifting means carried by said chains.

2. In card shifting mechanism the combination of a plurality of compartments arranged in the form of a geometrical figure; two sets of cards arranged on edge in each of said compartments, the two sets lying end to end; endless chains suitably guided and supported one at the inner side and the other at the outer side of the sets of cards of all the compartments; means for reciprocating said chains simultaneously in opposite directions comprising a continuously driving shaft; a driven shaft, means for intermittently actuating the driven shaft from the driving shaft, means whereby the rotary movement of the driving shaft effects a reciprocating movement of one of the chains, and means whereby the movement of the said chain in one direction effects the movement of the other chain in the opposite direction; and card shifting means carried by said chains.

8. In card shifting mechanism the combination of a compartment; two sets of cards arranged on edge in said compartment, the two sets lying end to end; reciprocating dogs one at one side arranged to shift the cards of one set of cards and the other atthe other side arranged to shift the cards of the other set, each of the cards adjacent one of its horizontal edges being adapted for engagement by one of said dogs; a part on each dog adapted to engage and press back the outside card of the other set than that which the dog is adapted-to shift; and reciprocating members moving synchronously with said dogs engaging and pressing back the said outside cards adjacent the horizontal edges thereof distant from the edges engaged by the aforesaid dogs.

4-. In card shifting mechanism the combination of a plurality of compartments arranged in the form of a closed straight sided geometrical figure; two sets of cards arranged on edge in each of said compartclosed straight sided ments, the two sets lying end to end; tWo pairs of endless chains suitably guided and supported one at the inner side and the other at the outer side of the sets of cards of all the compartments; means for recipro eating said pairs of chains simultaneously in opposite directions; card shifting means carried by one chain of each pair; and means carried by the other chain of each pair for pressing back the outside card of the set in front of which another card is being shifted.

5 In card shifting mechanism the combination of a plurality of compartments arranged in the form of a closed straight sided geometrical figure; two sets of cards arranged on edge in each of said compartments; the two sets lying end to end; tWo pairs of endless chains suitably guided and supported one at the inner side and the other at the outer side of the sets of cards of all the compartments; means for reciprocating said pairs of chains simultaneously in opposite directions; card shifting means carried by one chain of each pair; and means carried by each chain of each pair for pressing back the outside card of the set in front of which another card is being shifted. London England this twenty fifth day of November A. D. 1918.

JOHN SIMPSON. Signed in the presence of- HARRY B. BRIDGE, PERCY HEWITT.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, I). G. 

